This is not necessarily the current version of this TIP.
|Title:||Tk Bitmap Improvements|
|Version:||$Revision: 1.5 $|
Chris Nelson <chris at pinebush dot com>|
Kevin Kenny <kennykb at acm dot org>
Eric Melski <ericm at interwoven dot com>
|Created:||Friday, 26 October 2001|
This TIP improves handling of bitmaps in Tk.
Tk has a number of pre-defined bitmaps (10 on all platforms, and 16 more on Macs) but it lacks a number of useful bitmaps and there is no way to programmatically list the predefined bitmaps. This TIP adds a number of useful, basic bitmaps and provides for introspection of bitmap names.
Many complex widgets like comboboxes, spinboxes, etc. require arrows bitmaps on buttons. While newer releases of Tk have added more widgets, there will always be some unforeseen need for new or customized widgets. One example is a menubutton which, according to the Microsoft Windows User Experience (http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwue/html/welcome.asp), should have a downward arrow on the right side. With compound buttons, it is not hard to do:
button .mb -text Tools -bitmap downarrow -compound right
but there is no stock down-arrow bitmap.
I propose to add 12 bitmaps providing all four directions (up, down, left, and right) in three sizes (3x2, 5x3, and 7x4). The down arrows would look something like:
@@@@@@@ @@@@@ @@@ .@@@@@. .@@@. .@. ..@@@.. ..@.. ...@...
I propose the following names:
u7x4 u5x3 u3x2 d7x4 d5x3 d3x2 l7x4 l5x3 l3x2 r7x4 r5x3 r3x2